Weather forecast for tomorrowPortola Hills, CA
Weather forecast for tomorrow
Monday Oct 19, 2026
- 84°F
- 57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphSSW 207°
- Humidity: 43%
- UV index: 6
- Sunrise: 6:58 am PDT
- Sunset: 6:12 pm PDT
- details ▼
On Monday, October 19, the forecast calls for abundant sunshine.
A remarkable high of a warm 84.2°F during the day and a stark low of a mild 57.2°F at night are expected.
The maximum heat index, which integrates air moisture with ambient temperature, is appraised at 84.2°F.
With a forecast of 84.2°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 6:58 am and sunset at 6:12 pm; tomorrow's daylight will last for 11h and 13min.
A remarkable high of a warm 84.2°F during the day and a stark low of a mild 57.2°F at night are expected.
The maximum heat index, which integrates air moisture with ambient temperature, is appraised at 84.2°F.
With a forecast of 84.2°F, conditions deviate from October's average and instead resemble September's climate trend.
Sunrise will be at 6:58 am and sunset at 6:12 pm; tomorrow's daylight will last for 11h and 13min.
Hourly overview
Hourly temperatures
Warmest period: 12 pm - 3 pm 82°C.
Coldest hour: 6 am 61°C.
Coldest hour: 6 am 61°C.
Chance of precipitation
Highest chance: 9 pm 4%.
Hourly weather forecast
- 12 am
- 66°F
- Feels like:66°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphSSE 146°
- Humidity: 55%
- Pressure: 29.91"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 2 am
- 63°F
- Feels like:63°F
Clear
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphESE 106°
- Humidity: 63%
- Pressure: 29.91"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
- 4 am
- 61°F
- Feels like:61°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphENE 75°
- Humidity: 66%
- Pressure: 29.88"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
- 6 am
- 61°F
- Feels like:61°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphENE 76°
- Humidity: 64%
- Pressure: 29.91"Hg
- Visibility: 8mi
- UV index: 0
- details ▼
Sunrise: 6:58 am
- 8 am
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 1mphE 81°
- Humidity: 54%
- Pressure: 29.91"Hg
- Visibility: 7mi
- UV index: 0
- details ▼
- 10 am
- 75°F
- Feels like:75°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSSW 199°
- Humidity: 41%
- Pressure: 29.91"Hg
- Visibility: 8mi
- UV index: 3
- details ▼
- 12 pm
- 82°F
- Feels like:82°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSW 224°
- Humidity: 36%
- Pressure: 29.88"Hg
- Visibility: 8mi
- UV index: 6
- details ▼
- 2 pm
- 82°F
- Feels like:82°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 9mphSW 223°
- Humidity: 36%
- Pressure: 29.85"Hg
- Visibility: 8mi
- UV index: 5
- details ▼
- 4 pm
- 81°F
- Feels like:81°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSW 228°
- Humidity: 38%
- Pressure: 29.83"Hg
- Visibility: 8mi
- UV index: 2
- details ▼
- 6 pm
- 75°F
- Feels like:75°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSW 221°
- Humidity: 51%
- Pressure: 29.83"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Sunset: 6:12 pm
- 8 pm
- 70°F
- Feels like:70°F
Mostly Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphS 187°
- Humidity: 69%
- Pressure: 29.85"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
- 10 pm
- 66°F
- Feels like:66°F
Mostly Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 3mphSSE 155°
- Humidity: 80%
- Pressure: 29.85"Hg
- Visibility: 9mi
- UV index: 0
- details ▼
Tomorrow, on Monday, clear skies and sunny weather are expected.
The temperature will vary between the lowest temperature of 60.8°F and the highest temperature of 82.4°F. The warmest part of the day will be from noon to 3 pm.
The temperature will feel more alike with September's average high than the expected maximum for October. The lowest temperature is in line with October's typical minimum of 59.9°F.
The temperature will vary between the lowest temperature of 60.8°F and the highest temperature of 82.4°F. The warmest part of the day will be from noon to 3 pm.
The temperature will feel more alike with September's average high than the expected maximum for October. The lowest temperature is in line with October's typical minimum of 59.9°F.
Updated: Oct 18, 2026 @ 16:50:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in Portola Hills, expect consistent sunshine and open skies.
Tomorrow, the maximum temperature in Portola Hills will be 84.2°F, while the minimum temperature will be 57.2°F. The maximum heat index, which combines relative humidity and air temperature, is estimated at 84.2°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 75.9°F in October. The lowest temperature will be in line with the average low of 59.9°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 75.9°F in October. The lowest temperature will be in line with the average low of 59.9°F.
On Monday, in Portola Hills, sunrise will be at 6:58 am and sunset at 6:12 pm (PDT).
In Portola Hills, California, the length of the day tomorrow will be 11h and 13min.
